High-Quality Materials : You will get 4 cupping cups individually packed or set in a box; unlike traditional cupping devices, it uses vacuum cupping devices made of high-quality materials to provide good suction and control. Easy to Use : These vacuum suction cupping balls are made of high-quality silicone and glass materials; the detachable blue silicone top and thick glass design are anti-sensitive, skin-friendly, durable and easy to use. Suitable for : The cupping ball set is suitable for back, thighs, arms and legs, etc.; it can be applied to most types of skin, providing you with good skin care, swelling, relieving stress, and improving sleep by making you feel relaxed. Four Sizes Optional : Includes four different sizes of cups, the smallest one can be used for small areas such as eyes, and the other can be used for neck, cheeks, etc. Larger ones can be used on body parts such as arms. When in use, hold the silicone part, exhaust partly, and then suck on the skin. Use your skin care products for 10-15 minutes every day.